An Autonomous System Number (ASN) is a unique number assigned to a network in global internet routing. Every provider that participates directly on the internet has its own ASN (e.g. AS15169 for Google).

What are upstreams, peers and prefixes?

Upstreams are transit providers through which an AS reaches the internet. Peers are networks with direct traffic exchange. Prefixes are the IP address ranges the AS announces via BGP.

Where does the ASN data come from?

The data comes from the official RDAP services of the RIRs (RIPE, ARIN, etc.) and from RIPEstat (prefixes and neighbour ASNs).

ASN Lookup – Networks, Upstreams and Prefixes

AS5408

ASN

RIPE NCC

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS5408

NameGR-NET

OrganisationGRNET-NOC

Country –

RIRRIPE NCC

Allocated01.01.1970

Abuse contactabuse@grnet.gr

Network Overview

IPv4 Prefixes29

IPv6 Prefixes1

Upstreams (Transit)5

Downstreams (Customers)30

BGP Peers33

AS Path (BGP neighbours)

Upstreams (Transit)

AS13335Cloudflare, Inc.AS20965GEANT Vereniging AS21320GEANT Vereniging AS3491PCCW Global (HK) Ltd.AS8280SYNAPSECOM S.A. Provider of Telecommunications and Internet Services

AS5408GR-NET

Downstreams (Customers)

AS12364University of Macedonia, Economic and Social Sciences AS12402University of Piraeus AS15536European Centre for the Development of Vocational Training (CEDEFOP)AS15690NATIONAL OBSERVATORY OF ATHENS AS15948ICE/HT fundamental and technological research AS202640KENTRO POLITISMOU IDRYMA STAVROS NIARCHOS MONOPROSOPI A.E.+24

Upstreams (Transit) (5)

AS13335Cloudflare, Inc.

AS20965GEANT Vereniging

AS21320GEANT Vereniging

AS3491PCCW Global (HK) Ltd.

AS8280SYNAPSECOM S.A. Provider of Telecommunications and Internet Services

Downstreams (Customers) (30)

AS12364University of Macedonia, Economic and Social Sciences

AS12402University of Piraeus

AS15536European Centre for the Development of Vocational Training (CEDEFOP)

AS15690NATIONAL OBSERVATORY OF ATHENS

AS15948ICE/HT fundamental and technological research

AS202640KENTRO POLITISMOU IDRYMA STAVROS NIARCHOS MONOPROSOPI A.E.

AS203348Hellenic Telecommunications and Post Commision

AS20813Hellenic Open University

AS2546National Center of Scientific Research DEMOKRITOS

AS31563Hellenic National Meteorological Service

AS3323National Technical University of Athens

AS47065USC / UFMG PEERING Research Testbed

IPv4 Prefixes (29)

143.233.184.0/22

150.140.128.0/17

185.5.76.0/22

62.217.64.0/18

62.217.126.0/24

185.81.196.0/22

193.105.109.0/24

195.251.2.0/24

143.233.68.0/24

143.233.182.0/23

194.42.50.0/23

193.218.36.0/24

109.107.139.0/24

143.233.204.0/24

83.212.0.0/16

194.177.208.0/22

194.42.54.0/24

143.233.188.0/23

37.32.128.0/17

83.212.168.0/23

195.130.64.0/18

194.177.192.0/19

62.217.85.0/24

195.251.0.0/16

195.251.24.0/22

194.42.52.0/23

44.31.164.0/24

193.218.124.0/23

91.227.108.0/24

IPv6 Prefixes (1)

2001:648::/29

BGP Peers (33)

AS197580Connecticore Telecommunications Information Technology S.A

AS51185MainStreaming SpA

AS56457FASTPATH IKE